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support: Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ

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Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ since sysconf (_SC_MINSIGSTKSZ)
returns the minimum number of bytes of free stack space required in order
to guarantee successful, non-nested handling of a single signal whose
handler is an empty function while sysconf (_SC_SIGSTKSZ) returns the
suggested minimum number of bytes of stack space required for a signal
stack.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
H.J. Lu 2021-07-10 10:56:50 -07:00
parent 28d07380c2
commit 17cef890c9
1 changed files with 2 additions and 2 deletions
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4
support/support_stack_alloc.c
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@ -39,10 +39,10 @@ support_stack_alloc (size_t size)
if (pagesize == -1)
FAIL_EXIT1 ("sysconf (_SC_PAGESIZE): %m\n");
/* Always supply at least sysconf (_SC_MINSIGSTKSZ) space; passing 0
/* Always supply at least sysconf (_SC_SIGSTKSZ) space; passing 0
as size means only that much space. No matter what the number is,
round it up to a whole number of pages. */
size_t stacksize = roundup (size + sysconf (_SC_MINSIGSTKSZ),
size_t stacksize = roundup (size + sysconf (_SC_SIGSTKSZ),
pagesize);
/* The guard bands need to be large enough to intercept offset